Abstract
In this paper, an analysis method for the nonlinear behavior of reinforced concrete elements subjected to short-term static loads is proposed. The range of inelastic properties for the structural materials is considered, and the deformation processes of reinforced concrete bar elements are modeled. The structural material properties are modeled using the assumptions from plastic flow theory. The load capacity analysis method for the structural system is developed using the finite difference method. The dynamic relaxation method with critical damping allows for describing the static behavior of a structural element, which is used to solve the nonlinear equilibrium equations. To increase the effectiveness of the method for post-critical analysis, the arc-length parameter on the equilibrium path is included. Numerical experiments for a reinforced concrete beam and eccentrically loaded column are run. Comparative analysis with previously published experimental, numerical, and analytical results demonstrated that the proposed computational method is very effective.
Highlights
The effort analysis of structural elements made of concrete using different types of reinforcement is the subject of various studies
Analytical or numerical analyses were generally made for single structural elements
A numerical analysis of reinforcement concrete frame corners under an opening bending moment taking into account the assumed loading time was presented in [7]
Summary
The effort analysis of structural elements made of concrete using different types of reinforcement is the subject of various studies. These studies differ in scope, scale, and detail degree of analysis. The experimental and numerical analysis of the concrete circular plates with steel fibers reinforcement under impact load was presented in [5]. The latest analytical and experimental load capacities investigations regarding the new concept of composite steel-reinforced concrete floor slab, was presented in [6]. A numerical analysis of reinforcement concrete frame corners under an opening bending moment taking into account the assumed loading time was presented in [7]
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